System of splash lubrication.



No. 730,738. I p PATENTED JUNE 9,190.3.-

A. P. BRUSH.

SYSTEM OF SPLASH LUBRIGATION.

- APPLICATION FILED JULY 29, 1902.

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WITNESSES. E1 UVMWTOR.

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UNITED STATES Fatented une 9, 1903.

PATENT OFFIcE.

SYSTEM OF SPLASH LUBRICATION.

SPECIFICATION forming part of Letters Patent No. 730,738, dated June 9,1903.

Application filed July 29, 1902. Serial No. 117,454. (No model.)

have invented a certain new and useful In1-- provement in Systems ofSplash Lubrication, of which the following is a specification, referencebeing had to the accompanying drawings, which form a part of thisspecification.

My invention has reference to a system of splash lubrication formultiple-cylinder engines, permitting an engine to be set at an anglefrom ahorizontal'without any cylinder of the engine having an excess orlack of oil and with a single oil-feed for all of the cylinders.

To thisend it consists of the construction hereinafter described andclaimed, and illus-, trated in the accompanying drawings, in which-Figure 1 is a view in vertical cross-section on a line similar, so faras the base is concerned, to 1 1, Fig. 2, looking in the direction ofthe arrow in Fig. 2, but showing a modification of my invention. Fig. 2is a view in plan of an oilpan embodying features of my invention. Fig.3 is a view in side elevation, showing the interior construction of theoil-pan in dotted lines, one end being higher than the other. Fig. 4 isa vertical cross-section on the line 4 4, Fig. 2, looking in thedirection of the arrow. Fig. 5 is a simi lar section on the line 5 5,Fig. 2, looking in the direction of the arrow.

The drawings herewith submitted show an oil-pan for a triple-cylinderengine and in connection with parts of an engine. As herewithillustrated, I carry out my invention as follows:

In the drawings, a represents an oil-pan, the pan being constructed witha separate pit for each crank of the engine, said pits being indicatedby the numbers 1 2 3 and separated by suitable walls 12 c across'thepan. Each pit is provided with a trough or channel on the side towardwhich the crank moves when at its lowest position.

In Fig. 1 the numeral 4 denotes a crankshaft; 5, the crank-arm; 6, theconnecting-rod leading-to the piston 7 of the cylinder 8.1 The frame ofthe engine is indicated at 9, with which the pan C6 is engaged. Theseparts of and will descend thereinto.

the pit 3, said pit is shown provided with an angular trough or channel(1, leading along the side of the pan and discharging at its lower endover the wall 1) into the pit 2. The pit 2 is siinilarly shown providedwith an angular. trough or channel 6 on the side of the pan, dischargingin a similar manner over the wall 0 into the pit 1. The pit 1 isprovided with an elongated opening f into a conduit g, which is closedat its end in pit 1 and leads back and discharges into pit 3. It will beevident that by placing the trough and conduit on the side toward whichthe cranks move in their lowest position the greater partof the oilbeing thrown by them against the side of the frame will be directly oversaid troughs and the opening into the conduit If a multiplecylinderengine having splash lubrication be set at an angle, as indicated by thelocation of the oil-pan in Fig. 3, it will be apparent that the cylinderat. the lower end would have an excess of oil (but for the provisions ofmy invention) when the cylinders toward the upper end had sufficient oilor that if the lower cylinder had only sufficient oil the others wouldhave an insuflicient supply or none at all; but having the panconstructed as herein described this liability is entirely eliminated,inasmuchas the greater part of the oil thrown from the pit 3 by thecrank would be caught by its trough and discharged overinto pit 2, and,similarly, the oil thrown by the crank-arm dipping into pit 2 would becaught by its trough and carried into pit 1, while the greater part ofthe oil thrown by the crank dipping into pit 1 will be caught by theopeningf and carried by the conduit 9 back into pit 3, the operationbeing of course continuous and allowingan engine to be set in anyposition from a level to a point where the angiilar channels and conduitabove described would themselves become level. It will also be obviousthat the pits l and 3 are typical of pits at opposite ends for thecranks of any multiple-cylinder engine and that the pit 2 is typical ofany number of intermediate pits to correspond with multiple-cylinderengines of any desired number. Theoilpan may ICO rest level or it may beinclined without the possibility of any crank having a greater'supply ofoil .than another. I do not limit my invention, however, to theemployment of an oil-pan constructed as hereinbefore described, as thechannels and conduit need not necessarily be formed in aseparately-constructed oil-pan, but might be formed as a part of amultiple-cylinder-engine frame having splash lubrication. The samearrangement of separate pits for the cranks, with their channels andconduits, might be formed in the base of any multiple-cylinder engineand might be cast into the frame itself of the engineor otherwise formedwithin the scope of my invention as shown in Fig. 1. It is obviousthat-such provision is particularly useful for marine engines when it isdesirable to set the front end of the engine higher than the rear end.

The oil, obviously, may be introduced anywhere in the system of pits,the action hereinbefore described at once equalizing the amount of oilfor each cylinder.

What I claim as my invention is- 1. In a multiple-cylinder engineprovided with plural crank-shafts, the provision of a series of pits,one for each of the cranks, and

1 channels to carry the oil from the pit at one end of the series intothe pit at the other end of the series, and from the last-named pit intothe remaining pits. I

2. In a multiple-cylinder engine provided with plural crank-shafts theprovision of a series of pits one for each of the cranks, thecorresponding, side walls of said pits provided with angulariy-arrangedchannels to carry the oil from one end pit into the opposite end pit andfrom the last-named pit into the remaining pits.

3. In a multiple-cylinder engine the provision of separate pits for thecranks, the walls of said pits on the sidetoward which the cranks movewhen at .the lowest position provided with channels to carry the oilfrom one end pit into the opposite end pit and from the last-named pitinto the remaining pits.

4. In a multiple-cylinder engine the provision of separateangularly-arranged pits for the cranks, the walls ofsaid pits on theside toward which the cranks move when at their lowest position providedwith angularly-arranged channels to carry the oil from one end pit intothe opposite end pit, and from the last-named pit into the remainingpits.

5. In a multiple-cylinder engine the combination of an engine-frameprovided with an oil-reservoir,'a crank-shaft provided with a crank foreach cylinder dipping into said reservoir, said reservoir provided witha separate pit for each crank, said pits provided with channels to carrythe oil from one end pit into the opposite end pits and from thelast-named pit into the remaining pits.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

ALANSON P. BRUSH.

Witnesses:

N. S. WRIGHT, KATE E. WELLS.

